CVE-2019-20839
HIGH
7.5
CVSS Score
Published: June 17, 2020 at 03:11 PM UTC
Updated: June 17, 2026 at 02:31 AM UTC
16 products affected across 5 vendorsDebian LinuxUbuntu LinuxLeap
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Severity
HIGH7.5
Exploit prediction
EPSS 4%
Description
libvncclient/sockets.c in LibVNCServer before 0.9.13 has a buffer overflow via a long socket filename.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Debian Linux· Debiandrupal
95%v ≤ 0.9.12
Leap· openSUSEdrupal
95%3.0.0.0 ≤ v < 3.2.1.0
Affected range stops below 3.2.1.0, so it looks safe — our inference, not a vendor statement
siemens-simatic-itc1500 (same device)
3.0.0.0 ≤ v < 3.2.1.0
Affected range stops below 3.2.1.0, so it looks safe — our inference, not a vendor statement
siemens-simatic-itc1500-pro (same device)
3.0.0.0 ≤ v < 3.2.1.0
Affected range stops below 3.2.1.0, so it looks safe — our inference, not a vendor statement
siemens-simatic-itc1900 (same device)
3.0.0.0 ≤ v < 3.2.1.0
Affected range stops below 3.2.1.0, so it looks safe — our inference, not a vendor statement
siemens-simatic-itc1900-pro (same device)
3.0.0.0 ≤ v < 3.2.1.0
Affected range stops below 3.2.1.0, so it looks safe — our inference, not a vendor statement
siemens-simatic-itc2200 (same device)
3.0.0.0 ≤ v < 3.2.1.0
Affected range stops below 3.2.1.0, so it looks safe — our inference, not a vendor statement
siemens-simatic-itc2200-pro (same device)
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00033.html
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00055.html
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00066.html
- https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdf
- https://github.com/LibVNC/libvncserver/commit/3fd03977c9b35800d73a865f167338cb4d05b0c1
References (11)
Vendor Advisoryx_refsource_SUSEMailing ListThird Party Advisory
Source: [email protected]
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00033.htmlVendor Advisoryx_refsource_SUSEMailing ListThird Party Advisory
Source: [email protected]
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00055.htmlVendor Advisoryx_refsource_SUSEMailing ListThird Party Advisory
Source: [email protected]
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00066.htmlx_refsource_CONFIRMPatchThird Party Advisory
Source: [email protected]
https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdfx_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/LibVNC/libvncserver/commit/3fd03977c9b35800d73a865f167338cb4d05b0c1x_refsource_MISCRelease NotesThird Party Advisory
Source: [email protected]
https://github.com/LibVNC/libvncserver/compare/LibVNCServer-0.9.12...LibVNCServer-0.9.13Mailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2020/06/msg00035.htmlMailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2020/08/msg00045.htmlCVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-120
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